Improvement in



tricityg which produces tained-viz., the contact or .and clean,

to -the boot or shoc'or in the form of an inner'- can be inserted," whenrequired, withl in the shoe,

v ed, the foundation or flexible' part of the sole lasat I I. 4This lapmay NITED STAT-Eis j A'rfENT vma.

'IMPROV'MNT lNvoLrAic SHOE-soins.

Specification forming part of Letters Patent N o. 46.234,

4Be it'lmown that I, THoMAs'HALL, of Boston, in the county of Suffolkand State of Massachusetts, have invented an Improvement in VoltaicvShoe-Soles;

tion thereof, reference being had tothe accompanyingdrawings, and', tothe letters and lig-` ures marked thereon. 4 v v 5 Figure I, top view ofthe sole; Fig. Il, bottom view; Fig. III, vertical section on line GH`,Fig.I-I. C N

current of voltaic or gal-vanic'electricityin or uponthe uppersole'o'f aboot or shoe, or upona" movable or inner sole, the lseveral parts ofwhich the sole s-cempos'ediaeinlg soco'mbiued or arranged as to causethe moisture of the foot to excite or generate .a current of 'elec'certain medical effects upon the' system and communicates warmth and ahealthful glow-to the feet.

The's'ole and`the attachments' herein 'defy scribed may beinadein'var'ious forms, while the main features of my invention' arereun'ion'ot. any two opposite' metals, as zine` and copper or zinc andsilveysoplaced upon each other-as to cause, their and 'united ,to :asol'e' either ailixed' s'ole that and removed Iwhen it, ismot wan tbeingxn'ade of cork, leather, other suitable substance. The ordinary'form o fthe solois represented at S S, Figs. (on the' line III.

felt, cloth, or any .Upon -the non conducting sole or bottom' piece, Iis placed a series of vmetallic plates, A B, 'A' B', &,c.,

sole, the plates, .and the cloth being securely held togetherythe'rivets C C.-

The' metallic 'plates A and B abovexreferred to are made ot' twoopposite metals, as zinc and copper onzinc and silver, alternating witheach other, an t e e e of one-plate lapping over and in contact withthe' adjoining plate, beabout ohefthirdof and I do hereby declare that'the following isa full and exact descrip My -improvement is designed'lte produce@ dated February 7,1865.

l the breadth of the plate, leaving two-thirds of its breadth exposedupon the upper surface,v

upon' 'which the foot rests.-

dissimilar metal (A representing the zinc and B-the copper plates) thusresting upon each other form' a voltaic pile,-

moisture at thejunctions I I o'f'theplates. I iud by actual experimentthat the'ordinary moisture orperspiration ofthe foot causes v. tooviolent electrical action and=rapid corrof I therefore cover them withsion of the plates.- a thin strip of cloth ,1), several layers of whichare'- used in' cases where the perspiration is profuse; l Y

the position herein described is to insure the vention of oxide, ofcontact of the plates being constantly propoints ofcontact to be keptbright bef .This diiersentirely from the linvention of Nowlan andothers, in which the'copper plates i I and Il, and a vertical section.

and .above' these plates one" or more thicknesses of cloth, D, thebottomv duced by the their motion and friction upon vEach set of rivetsmovement-of the foot.

only contact or elecreplaced upon one side o'f the s'ole and thefz'incplates upon'the'opposite'side and joined o r'conuected toeachother by a v in 'etallic con- 'ductor in'the form' of rivets oreyelets, the application of moisture being upon one plate only..

ters Patent, i's-' i ."The combination of the non-conducting sole orbase with a series of alternate plates of dissimilar ineta'l lappingupon each other, so that `their points'of contact may j-be kept brightby the friction caused' by 'the motion of the foot,

tion ofthe plates. j THQMAS'HALL. [Lgs] In presence of- FRANKTC. DODGE.

JOHN M. "BATOHELDER;

It is obvious that the alternate yplates 'ofthe generation ot'`electricityA depending upon the application *ofi l My object-. inpaeingthe metauieplates in 4contact of the two 'metals without .theinter-- abright surface at the points each otheras the sole bends with the.rockingf' What I claim, anddesire to secure by Letandallowing themoisture or perspiratiouof thefoot to act upon bothl metals attire/junc-

